Where do you like to catch exceptions and why?

Question

Where do you like to catch exceptions and why?

I\'m interested in seeing where people find it useful to put their try/catch blocks in the hope that some general patt

Answer 1

I like to catch around handlers in the controller that handle events fired from the view. If exceptions give the strong guarantee of safety this is a useful catch point because it is high level enough to report the error and the handlers are usually atomic and related to something that the user has just done so hopefully they'll be able to work out what's going on.

void Controller::on_edit_entity( const Entity& entity ) {
    try {
        Command::ptr command = new EditEntityCommand( entity );
        push_command( command );
    }
    catch ( const std::exception& exception ) {
        fprintf( stderr, "%s.\n", exception.what() );
    }
}